body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
    -webkit-font-smoothing: antialiased;
     -moz-osx-font-smoothing: grayscale;
    width: 100%;
    height: 100%;
    padding: 0;
    background-color: #f8fafc;
    font: 14px/1.5 "PingFang SC","微软雅黑","Microsoft YaHei",Helvetica,"Helvetica Neue",Tahoma,Arial,sans-serif;
    color: #1c1f21;

}

code {
  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
    monospace;
}
